Calk-lock



E. C. SADLER.

CALK LOCK.

APPLICATION ,F,ILED JAN. 25, 1921..

1,9,165, Patentedseptfi, 1921.

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Giro-mag EDWARD o. SADLER, or ronrnenn, cannon, nssrenon T0 'rrrno. nnnsiunivn, or PORTLAND, ones-01v.

CALK-LOCK.

Specification of Letters Patent.

Patented Sept. 6, 1821.

Application filed January 25, 1921. Serial 110.439,?14.

To all whom it may concern:

B it known that I, EDWARD C. SADLER, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in a Calk-Lock, of whichthe following is a specification.

The invention relates to improvements in calk locks, and more particularly to a type of the same adapted for securing calks in leather shoes for personal wear.

The main object of the invention is to provide a simplified form of locking means for boot and shoe calks, and one which may be of an inexpensive construction, and by being cut'from or bent out of sheet metal with rapidity and in large numbers, but, when properly applied, functions to effectively prevent the calk from becoming loosened, or otherwise displaced from correct operative position.

Another object of the invention is to provide for a locking means of the character specified, and one of a type functioning not only to prevent the displacement or loss of a calk of a boot or shoe, but also to prevent a calk from being driven, or otherwise embedded in the heel or sole portions thereof beyond a predetermined depth.

With the foregoing and other objects in view, all of which will be readily apparent as the detailed description progresses, the invention resides in the certain new and useful construction as will be hereinafter more fully described, set forth in the appended claims, and illustrated in the accompanying drawings, in which Figure 1 is a fragmentary section of a heel or sole portionof a boot or shoe showing the use of the invention,

Fig. 2 is a perspective view of one form of the locking means,

, Fig. 3 is a similar view of a slightly modified form thereof, and r 7 Figs. 4 and 5 are other similar views of further modifications of the same.

Referring to the drawings, wherein similar characters of reference designate corresponding parts in the several views thereof, the simplest form of the invention, as shown in Fig. 2, comprises a blank to bebent from sheet metal or cut from the same in any other desired mannenand formed to provide a body. portion 10, either square or rectangular in form, and substantially triangular shaped end portions 11 bent at right angles with respect to the body'portion 10, the latter having an. opening 12,.preferably circular in, form, at its center and medially between the end portions 11.

p The slightly modified form of the invention,.as disclosed in Fig. 3, follows generally the construction as in Fig. 2, and consists of the square or rectangular body por- U011. 10, the bent end portions 11 and the centrally disposed opening 12, but, in this instance, the end portions 11 are stamped or cut as of even width to that of the body portion 10 and with a substantially V-shaped of a circular body portion 10 having angu larly disposed prongs or piercing points 11", with a center opening 12*; In the manufacture of this particular locking device, the circular body 10 is stamped from the metal sheet with a pair of oppositely disposed elongated prongs 11 tapering outward from their point of connection with the body 10 to provide piercing points at their free ends. These prongs 11 are twisted, as at 14, so that the same are disposed in edge to edge relation one with respect to the other, and bent at right angles with respect to the body.

These locking devices are particularly designed for use in connection with a common ordrivecallr, of the type as shown in Fig. 1, and the same usually consists of a substantially conical and pointed wear portion 7), a substantially conical and pointed piercing point 0, the latter being preferably-serrated or roughened for afirm engagement when driven into the leather of the heel or sole of a boot or shoe, and an annular shoulder or rib (Z at thejunction of the bases of the conical portions 6 and c. The point 0 isgenorally of the length to pass throughatleast one thickness of the leather of the heel or sole and to engage in a second thickness as shown in Fig. 1, these thicknesses of leather being generally designated at a.

In the use of these devices, the same may be used singly either as an outer locking means for preventing the displacement and loss of the calk, or as an inner means for preventing the calk from being driven too far into the leather or being forced therein be,

yond its predetermined depth, or they may be used in pairs for the dual function, in which case, one locking means or element is superimposed on the other with the prongs of the outer means in side to side relation to the prongs ofthe inner means. When applied to the sole portion only of a boot or shoe, and as shown in Fig. 1, the points of the prongs may be suitably clenched 1n the inner surface of the inner thickness or innersole of the boot or shoe.

In applying the locking devices, one of the same is positioned on the bottom of the heel or sole portion of a boot or shoe by driving, or otherwise forcing the prongs of the same through the leather and clenching the points of the same, if necessary. The piercing point of the calk is now placed at the center opening 12 and the calk driven into the leather until the shoulder or rib d contacts the outer face of the body 10. If an outer locking means is used, a second locking device has its openings placed on the pointed end of the calk and the prongs are driven into the leather, identically in abutting relation to the prongs of the inner member, and clenched, if necessary, In driving the outer device home, the metal of the body portion, surrounding the central opening, will be slanted slightly outward so as to remain 1n contact with the outer face of the shoulder or rib (Z of the calk, while the more remote body portion will contact the outer face of the lower locking device, as shown in Fig. 1..

From the foregoing it will be readily apparent that an extremely effective locking means for boot and shoe calks has been provided, and that the devices can be cheaply and quickly manufactured in large numbers, without any appreciable expense in machinery or other forms of complicated mechanisms. V

It is to be particularly understood that m general form, shape or time, these locking devices may be modified throughout a comparatively wide range, and also that the plercmg points or prongs may be of any suitable form, shape, or configuration, or they may be increased in number either at the ends of the body portion, or along the sides,

or along boththe sides and ends thereof, or around the periphery of the same, as may be desired or deemed necessary, without departing from the spirit and scope of the invention.

Having thus fully described the invention, what is claimed, is

1. In combination, a shoe calk having an annular shoulder for determining its depth of penetration into the heel or sole of a boot or, shoe, and locking means adapted to be secured in the under surface of the boot or shoe and engage the opposite sides of the annular shoulder of the calk for securing the latter from accidental displacement from normal position.

2. In combination, a shoe calk having an annular shoulder for determining its depth of penetration into the heel or sole of a boot or shoe, and locking means of'sheet metal adapted to be secured in the under surface of a boot or shoe and engage the opposite sides of the annular shoulder of the calk for seeming the latter from accidental displacement from normal position.

3. In combination, a shoe calk having an 9 annular shoulder for determining its depth of penetration into the heel or sole of a boot of shoe, and a locking means therefor, said locking means comprising blanks of sheet metal apertured for engagement one to each side of the shoulder of the calks, and prongs formed with said blanks and engageable in the leather of the heel or sole for securing the latter in position.

5. In combination, a shoe calk having an annular shoulder for determining its depth of penetration into the heel or soleof a'boot or shoe, and a locking means therefor, said lockingmeans comprising blanks of sheet metal apertured for engagement one to each side of the shoulder of the calks, and prongs formed at opposite sides of said blanksand engageable in the leather of the heel or sole for securing the latter in position.

6. In combination, a shoe calk havinga'n annular shoulder for determining its depth of penetration into the heelor soleof a boot or shoe, and a locking means therefor, said locking means comprising blanks of sheet .metal apertured for engagement with the shoulder of the calk, and prongs formed at opposite ends of said blanks and e'ngageable in the leather of the heel or sole for securing the blanks in position.

7. In combination, a shoe calk having a shoulder for determining its depth of penetratlon into the tread of the "heel or'sole of aboot or shoe, and a'locking means adapted to be secured in the tread surfaceof theboot or shoe and to engage" the'outer side of 'the shoulder for determining its depth of pene-V tration into the tread of the heel or sole of a boot or shoe, means adapted to be interposed between the opposed faces of the tread and the shoulder for preventing abnormal penetration of the calk, and a looking means 10 adapted to be secured in the tread surface of the boot or shoe and to engage the outer side of the shoulder for securing the call: from aecidentaloutward displacement from normal position.

In testimony whereof I afiix my signature hereto.

EDWARD G. SADLER. 

